Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to estimate when it's the best time to plant copperleaf by checking out the USDA zone info for Lake Oswego.

Planting Calendar for Copperleaf

Frost tolerance for copperleaf:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably a bad idea to plant copperleaf until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant copperleaf in Lake Oswego is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant copperleaf and expect a good harvest is probably August. Any later than that and your copperleaf may not have a chance to really do well. You can get started a couple of weeks earlier by starting your copperleaf indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Lake Oswego. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Lake Oswego is not always accurate the actual date of last frost is different every year. Since half of the time in Lake Oswego you get a frost after March 15 be ready to cover your copperleaf in the event of one of those late frosts.

USDA Zone Info for Lake Oswego

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Lake Oswego

You may be interested in your other planting guides for Lake Oswego.